Spring construction.



G. BURGESS, J11. SPRING CONSTRUCTION.

APPLICATION FILED JULY 5, 1007 Patented Nov. 3, 1908.

Ul'lAltLFS BURGESS, JR, OF "ENUNA, ILLlNfllS.

SPRING CONSTRUCTION.

Specification of Letters Patent.

Patented Nov. 3, 1908.

Application flied July 5, 1907. Serial No. 382,262.

To all whom it may concern:

Bu it known thnt I, CHARLES BURGESS, Jr., :1 cit izcu oi tho linitod States, residing at WU norm, in tho county of illurshall and State of lllinoin. lnrvc invcntod ccrtnin new and usc-- ful llillil'UYtllltlllS in Spring Constructions,

of hich thc I'ollowing is n. specification.

My invcntion l'tlitltH to a spring crmstruction. tho prinnny olijcct of which is to absorb thc shocks dclivorcd to the frame of a vohiclc, to which thc spring in uttsu'hcd, when the spring is lluxcd up or donn, mid thc invcntion consists in providing n. comprcssion nicinlicrnt orwv or liothcnd'sol o spring adnpt-.

tho vohiolo its ll.

in tho zircoinprniying drawing, Figurc l is :1. longitudinal elevation of the spring construction prcl'cruhly c|nployod at the rczrr of a. vchiclc, for thc birch hccls; Fig. 2 is :1 shin-- lzn' 'icw ol tho i'orw'rn'd portion of tho rchiclc. tho fi'tlilit in lHJLll \"iows hcing ln'ohcli awry and a compression incmhcr in suction; Fig. I; 11. (:1 )Sb scction on line Il -3 of Fig. l 3 and Fig. 4 is an ond clovatioi'i of (mo of thocoln prcssion monilicrs in Fig. l.

lttil crring now inoro specifically to thc drawing, 5 rcprcscnts the frmno of the \chic'lc, having :1. hanger arm 6 preferably fornicd intcgrnl with the frame and Suitably bent to irl l'ord support for one cnd of a spring, while 7 is "4. dc-pending arm scoured to thc fl'ttlllt in any suitable manner and aduptcd to support the othcr end of it main *pring 8. 'lhc nu-tin or ccntrnl spring 8 may have n scrics ol' louvcs i) intcrposcd on oithorsidc thcrcof and hold in nlincmcnt liy lncnns of thc v0.1" tit-n1 guido posts it! and roller bearings ii intcrposcd on the top and botton'i loaves and journzilcd in the guide popts 10. Soourcd centrally oi the spring, by means of the, U- shaped plates 12, is n plate 13 which is providcd with an annular hearing 14 for an rule .15.

Rc orring now to Fig. 2, which is the forward and of a vehicle frame, the cciztral spring 8 is provided with an apcrtured lug 1.6 at. one end thereof, the aperture in which registers with an o e in the hanger arm 6 ol' the frame, and is atlirpted to he pwotnlly SCCUIGd thereto by means of the bolt 17. Secured to tho depending lntngcr 7 is a compression momlicr, heroin shown consisting of a square casing 18, having an npcrturcd lug 19 formed in'tcgrn ilu rcwith, and the npcrturc in which registers with an cyc. in thc hangcr frame 7, whereby the casing 18 is pi'votnlly sccurcd to tho hangcr frame by Int-urn of tho l olt 2U. (using 18 is providcd m. it rcnr end with u hozul 2i that is sci'a o cd into an annular iiangc 22 on the ('2'l. ill", and thinly closc ihc rearward end thorcol'.

Slidalily mounted within the casing 18 is a piston rod 23 carrying a. piston haul :4 that is provided with :1 small apr-rt urc 25 whereby oil within tlic casing is permittcd to llow on cithcr sidc of thc piston hcad. ring 26 prov ants lcnlnigc at the joint when the piston rod iv ulidnhl}: mount cd in thc casing. To the outcr cnd of tho piston rod one cnd of thc spring 8 is nttnchcd, hcrcin whown as nontcd within :r slot 27 in thc piston rod and m'crtical loolt 2R cXttntls throng-lithe two tll'lllS l'ormod lay the. slot in tho nisi in rod 21* wcll as through the r-pring 8, thin sccuring suid pi ton rod and spring limo tog -thcr. 'lhc casing is ndriptcd to lic lillcc with oil or air. whcrclrv hcn thc spring is l. \i d up or down thc pinton hcnd will lll draw l irwnrd, lhcrch compressing thc oil r an \i t rin the casing and forcing it throng! ihc limll 2l]|tl turc .35 in thc piston hood r llu cpposilc sidcs thcrcoi'. As a nlcuns l' n' llllin: iho can ing, a suitnhlc valvc 20 is prov dcd Fig. 2 shons thc construction (1* used at tho forward cud ol :1 \chiclc. and ihc Fannconstruction might l)( uscd tor the roar \\'l1ccl.' but in Fig. 1., l have r-l l0.\ll the prclcrrcd i'orni uscd at tho rcnr, \villli i insists. ol' two UOllllil'tShlUXl members, one iu'l1];"ll lil at ouch end ol :1 spring. A straight pring i prel'crahly (l1l])l() \'l(l, and tho pi-ton in 1hr compression mcinhcrs arc serurc i in will? stantial axial alincnicnt ith inc cntcr sprin S, but thinv precisc comd l ilt'llOll is not a lisolutcly csscntial. as. tho wllllilthr lwll members might be dispos-rrl at an onglc rcla-- tive to thc central loaf of th \pimg. it iii-111g, however, essential that thc com jll rifih ill lll\'l]i* hers are pivotally scoured to the dcpcnding hangers as well as to the l'rnmc. and that ihcir angle he sufl'icicnt so no to allow the pistons therein to he drawn forward \sliill the spring is flexed up or down. it can be readily seen A packing that this construction accomplishes two points essential to a good spring construction, namely, the permitting of a longitudinal ment of the spring itself relative to the co1npression members, and therefore without confining myself to the specilie construction shown, I claim: 1. In a spring construction the co1nb1natween its ends to said axle, one end of said spring secured to said frame, and a comprestion of an axle, a frame, a spring secured besion member comprising a casing having a 1 s uare bore, pivoted to said frame and ads e to contain a liquid, and a piston provi ed with a square head within said casing having one of its ends secured to the other end of said spring, substantially as described.

2. In a spring construction the eoxnbination of an axle, a frame, a spring secured between its ends to said axle and a compression member at each end of said spring, comprismg a casing having a .square bore, pivotally secured to said frame and adapted to contain a liquid, a piston having a square head within each of said ings,and said pistons connected to th inds of said spring, substan tially as deem/lied.

3. In a spring construction the combination of an, axle, a frame, a sprin r secured between its ends to said axle, anr a compression ll'ltlliifll' at each end of said spring comprising a casing havin a square bore, pivotally secured to said tame and adapted to contain a liquid, a piston liaving a square head within each of said casings, said pistons connected to said sprin at each end thereof and lying in substantial y the same horizontal lane as said spring, substantially as desori ed,

4. in a spring construction the con1bination of an axle, a frame, a spriw secured be tween its ends to said axle, and a con'ipression member at each end of said s. ring comprising a casing having a square l |ore,'pi.votally secured to said frame and adapted to contain a liquid, a piston having a square head within each of said casings, said pistons I connected to said spring at each end thereofand in substantial axial alinenient with said spring, substantially as described.

CHARLES BURGESS, Ju.

W it nesses:

Fnnnnnloic (I. Goonwm, JAMES R. OFFIELD. 

